The steel feels good, but the blue surface is very brittle. When I opened the plastic to get the nuts out, simply wiping down the packaging and nuts during shipping stopped. I'm quite frustrated that you can easily erase the color. I always knew Muteki was of such high quality. I am now hesitant to buy any other nuts from them if they are of this quality otherwise I would go for the cheaper black version if I didn't want color. Otherwise, I love the 6 slots and key to turn it on and off. I want to buy a quality Muteki lock nut kit but for now I feel safe with it.